Reversible disk harrow.



E. M. HEYLMAN. REVERSIBLE DISK HARROW. APPLICATION FILED SEPT. z. 1911.

2 SHEETSSHEET 1.

Patented Mar. 9, 1915.

E. M. HEYLMAN. REVERSIBLE DISK HARE/0W. APPLICATION IILED SEPT. 2. 1911.

Patented M21119, 1915.

2 SHEETS-SHEET 2.

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mwmw yawk THE NORRIS PETERS C0,, PHOIUJJTHO. WASHINGTDN. D. C.

EDWARD M. I-IEYLBIAN, 015 BOOK ISLAND, ILLINOIS, ASSIGNOR TO ROCK ISLANDPLOW COMPANY, OF ROCK ISLAND, ILLINOIS, A GOBPORATIUN OF ILLINOIS.

REVERSIBLE DISK HARRO'W'.

Application filed September 2, 1911.

To all whom it may concern Be it known that l, EDWARD M. HEYLMAN,

a citizen of the United States of America, and resident of Rock island,Rock Island county, Illinois, have invented a certain new and usefulImprovement in Reversible Disk Harrows, of which the following is aspecification. My invention relates to disk barrows, and moreparticularly to that type of harrow commonly known as a reversible diskharrowthat is, one in which the disk gangs are adapted to be positionedso as to either throw in or throw out.

It relates more particularly to a reversi le disk harrow of the typeembodying a transverse frame upon which the disk gangs are adjustablymounted.

Among the objects of my invention are to provide an improved means formounting the disk gangs on this transverse frame, and also to provideimproved means for adjust ing these disk gangs laterally on the frame,and also to rovide means for adjusting the gangs around a vertical andhorizontal axis.

These and other objects of my invention will be more clearly understoodby reference to the accompanying drawings, in which similar referencecharacters refer to similar parts, and in which- Figure 1 is a plan viewof a disk harrow embodying the features of my invention. Fig. 2 is aside elevation of the same. Fig. 3 is a detail view of one of the diskgangs and the means for supporting the same. Fig. 4- is a sectional viewtaken on line 4 l of Fig. 1, looking in the direction of the arrows.Fig. 5 is a sectional view taken on line 5 5 of Fig. 1, looking in thedirection of the arrows. Figs. 6, 7, and 8 are detail views showing theconstruction of the brace bar connected with each gang. Fig. 9 is asectional detail view. Fig. 10 is a detail view of the transverse bar.

1 have illustrated a disk harrow compris- Specification of LettersPatent.

Serial No. 647,323.

These disk gangs are of similar construction and are mounted on thisframe in a similar manner. 1 will, therefore, describe the manner inwhich one of these gangs is mounted on this frame, it being understoodthat this description will apply equally as well to the other gang.

Extending between the forward and rear frame bars 8 and 9 there is afore-and-aft shaft or arbor 12 which is secured at its opposite ends tosuitable castings 13 and 141, which castings are clamped to the framebars '8 and 9 by means of the clamping members 15 and 16, which areconnected with the castings 18 and 14 by means of the bolts 17. By thisconstruction it will be readily seen that by loosening the nuts upon theend of the bolts 17 these castings 18 and 1 1, and with them thefore-and-aft shaft 12, can be moved transversely of the machine alongthese frame bars and then be held in any desired position by againtightening these nuts upon the bolts 17. Mounted upon this foreand-aftshaft 12 and adapted to pivot upon the same there is a yoke-shapedsaddle plate 18 provided with bearing openings in the rear end of itsupper and lower arms, in which bearing openings the vertical standard 19is supported. This vertical standard is enlarged at its lower end as at20, and is secured to the yoke bar 21 which supports the disk gang inthe well known manner. Extending laterally from the yoke-shaped saddleplate 18 there is a short arm 22 through the opposite end of whichextends a bolt 23, which bolt is adapted to engage with an elongatedslot 24 in the casting 25, which casting is secured to the inside of theframe bar 9 and is integral with the casting 14:. By this constructionit will be readily seen that by loosening the engagement between the arm22 and the slotted casting 25 this arm 22 can be moved so as to rotatethe saddle plate about the fore-and-aft shaft 12, and this saddle platecan be held in place by again tightening the connection. between the arm22 and the slotted casting 25.

The enlarged lower end 20 of the standard 19 is provided with arectangular shaped depression through which passes the transverselyextending bar 26. Upon each end of the bar there is a downwardlyextending lug 26. One or the other of these lugs, depending upon whetherthe gangs are positioned to throw in or throw out, is adapted PatentedMar. 9, 1915..

' to engage withan opening in the forwardly shaft 29.

extending link 27, as vclearly shown in Fig. 9, being held therein bymeans of a cotter pin or the like, thereby forming a pivotal connectionbetween the bar 26 and the link 27. The forward end of this link 27 isconnected to the rock arm 28 secured to the rock This rock shaft ismounted in suitable bearings 30 and 31 secured to the forward frame bar8. Loosely mounted upon this rock shaft and rigidly connected with theframe is an arc-shaped segment, while rigidly connected with the rockshaft adjacent to this segment there is a handlever 33 provided with aspring finger 3-1 adapted to engage with the teeth in this segment. Whenit is desired to adjust the disk gangs about a vertical axis so as tochange the throw of these disks, it is merely necessary to disengagethis spring finger from the teeth of the rack and to then move the handlever 33 so as to rock the rock shaft 29 to move the rearwardlyextending link 27 forward or back, as the case may be, and to thusrotate the disk gangs about the vertical standard 19 as an axis. Therock arm 28 is adjustably connected with the rock shaft 29, so that bymerely loosening the boltand-nut connection 36 this arm can be movedlongitudinally along the rock shaft to allow for the transverseadjustment of the disk gangs in the frame. hen the gangs are positionedin the manner shown in Fig. 1 so that they throw in, the connections arepreferably so adjusted that when the disks extend at right angles to thetravel of the machine the spring finger 34 upon the hand lever 33 is inengagement with substantially the forward tooth on the segment 32, sothat the full length ofthe segment is available for obtainingthe'forward' movement of the connecting link 27 for the adjustment ofthe disks'about the vertical axis. When it 7 is desired to position thegangs to throw out, it is merely necessary to disconnect the bar 26'fromthe link 27. then rotate the disk gang and then again connect the barand link by means of-the downwardly extending lug 26 'at the oppositeend of bar engaging with the'opening 3 7 at the extreme rear end of thelink 27. By providing this extrahole 37 the adjustment is so that whenthe gangs are in the position to throw out and are positioned in alineat right angles to the travel.

ofthe machine the spring finger at on the hand lever 33 is in engagementwith the notch at substantially the rear end of the segment, so thatsubstantially the entire to adjust the inner end of the gang, so that itis to the rear of the axis 19, while when the disks are reversed and arein position to throw out it is never desirable to have the inner end ofthe gangs at a point forward of the axis 19. Furthermore, by means ofthe adjustability of the rock arm 28 upon the rock shaft 29, the link 27is always mounted in a position parallel to the axis of the machine, andthere is therefore never any side throw placed upon this rod due to thetransverse adjustment of the gangs.

In order to steady the disk gangs I provide a brace bar 38 which at itsupper end is connected to the saddle plate 18 by means of a hook and eyeconnection and as shown in Fig. 7. Heretoforc when such a brace has beenused difliculty has been experienced owing to the binding effect of thisbrace when the gangs were rotated. I overcome that objection by theprovision of a form of universal joint between the lower end. of thisred and the gang. To obtain this joint, I provide the lower end of thebar 38 with a yoke member 39, the opposite arms of which are pivotallyconnected with the bear ing 4&0 which is loosely mounted upon the shaftall of the disk gang. By this construction it will be seen that thebrace is adapted to swing in a vertical plane with respect to the diskgang, owing to the rotation of the shaft 41, and is free to rotatelaterally on account of the pivotal connection between the yoke 39 andthe bearing -10.

It is further evident that in my construction I have provided a verysimple and efficient means for mounting the gangs on the side frame, butit is to be noted that instead of mounting these gangs between the frontand rear frame bars, as in prior construc tions, I have obtained a veryefiicient construction by positioning the standard upon which thesegangs are mounted upon the rear of the frame bar 9-that is, outside ofthe frame.

lVhile I have illustrated one particular embodiment of my invention, itwill be un derstood that I do not wish to be limited to this exactconstruction, as many other obvious modifications will suggestthemselves 115 to one skilled in the art.

What I claim as my invention is:

1. In a disk harrow, a frame comprising front and rear frame bars, afore-and-aft arbor mounted between said frame bars, a 120 saddle platepivotally mounted upon said fore-and-aft member, and a disk gangsupported by said saddle plate to the rear of said rear frame bar.

2. In a disk harrow, a frame comprising 125 front and rear frame bars, asaddle plate mounted in said frame and adapted to be adjustedtransversely thereof and about a fore-and-aft axis, a yoke-shapedportion on the rear end of said saddle plate, a vertical 130 standardsupported by said yoke-shaped portion to the rear of said rearframe,bar, and a disk gang carried by said standard.

3. In a disk harrow, a frame comprising front and rear frame bars, asaddle plate mounted in said frame and adapted to be adjustedtransversely thereof and about a fore-and-aft axis, a yoke-shapedportion on the rear end of said saddle plate, a vertical standardsupported by said yoke-shaped portion to the rear of said rear framebar, a disk gang carried by said standard, and means for adjusting saidgang about said vertical standard.

1. In a disk harrow, a frame comprising front and rear frame bars, asaddle plate mounted in said frame and adapted to be adjustedtransversely thereof and about a fore-and-aft axis, a yoke-shapedportion on the rear end of said saddle plate, a vertical standardsupported by said yoke-shaped portion to the rear of said rear framebar, a disk gang carried by said standard, a rock shaft mounted uponsaid front frame bar, and means for rotating said rock shaft to rotatesaid gang about said vertical standard.

5. In a disk harrow, a frame, a disk gang mounted in said frame, atransversely ex tending bar connected with said gang, a forwardlyextending link connected to the 111-- ner end of said bar, a rock shaft,connections from said forwardly extending link to said rock shaft, alever for rotating said rock shaft to cause a fore-and-aft movement ofsaid link for adjusting said gang about a vertical axis, means forreversing said disks, and means for connecting said transverse bar tosaid forwardly extending link ata second point when the disks are inreversed position.

6. In a disk harrow, a frame, a saddle plate mounted on said frame, adisk gang, means whereby said disk gang is carried by said saddle plate,a brace bar connected at one end to said saddle plate and a universaljoint between the opposite end of said bar and said disk gang.

7. In a disk harrow, a frame, a saddle plate on said frame, a disk gangcarried by said saddle plate, a brace bar connected at its upper end tosaid saddle plate, a yoke secured to the lower end of said brace, arotary bearing on the shaft of said disk gang and a pivotal bearingbetween said bearing and said yoke, whereby said brace is free to swingin a vertical or horizontal plane.

Signed by me at Rock Island, Illinois, this 80th day of August 1911.

EDWARD M. HEYLMAN.

Witnesses:

L. F. CANNON, C. E. SHARPE.

copies of this patent may be obtained for five cents each, by addressingthe Commissioner of IlPatents,

Washington, D. G."

